Greenheck MSX (470658) - Manual (Page 21)

21 Modular Supply Make-Up Air Unit
®
Water Wizard™ User Interface
Key Function Description
Recommended Water Pressure Chart
Housing
Size
Media Width
(inches)
Water Pressure
(in. wc)
MSX-H12 30 20
MSX-H22
43 3 ⁄
4
36
60 61
MSX-H32
66 72
96* 42
MSX-H35 120* 61
MSX-H38 180* 37
MSX-H42 216* 51
*Multiple media sections. Values represent total media width.
WARNING
Opening the manual supply valve will allow water to
pass to the media. Be sure the sump is safely draining
before opening the manual supply valve.
NOTE
The manual supply valve ships closed and must be
adjusted for proper performance.
NOTE
The recommended water pressure is based on media
width. Refer to the table provided for proper water
pressure settings.
Start-Up - Water Wizard™ (optional)
Program Display
NOTE
Steps 6 through 8 are provided to adjust the minimum
cooling temperature. The minimum cooling is preset
to the factory recommended 75°F (24°C). Only adjust
if needed.
NOTE
The inlet air sensor function overrides and shuts down
the evaporative cooler if the outside temperature falls
below the minimum cooling temperature.
7. Adjust the Minimum Cooling Temperature.
While in the Program Menu, use the Up and Down
Keys to navigate the Menu Options until “toF” is
displayed. Press the Enter Key
to access the
selected Menu Option setting.
Use the Up and Down Keys to adjust the Minimum
Cooling Temperature as needed. Press the Enter
Key
to save the Minimum Cooling Temperature
setting and return to the Program Menu.
Minimum Cooling
Temperature Display
NOTE
The enter key must be pressed to save the new
minimum cooling temperature.
5. Check Media. Start the cooling cycle and check
the media after one hour of operation. If the media
is continuously dry or if too much water is draining
from the sump tank, refer to Troubleshooting, Water
Wizard™.
6. Enter Program Mode. Press and hold the Enter
Key for three seconds. The display will read
“Pro” when Program Mode is active.
Function Key
L1 L2 L3
Enter Key
Up Key
Down Key
1. Open the Solenoid. Confirm that the manual
water supply valve is closed. Press and hold the
Function Button
for one second. L3 will begin
blinking (short on, long off), indicating that Flow
Test Mode is active and the supply solenoid is
open.
2. Set the Water Pressure. With the solenoid open,
set the supply water pressure to the correct setting
(see table below). Use the manual supply valve to
adjust the supply pressure. A pressure gauge is
provided between the manual supply valve and the
media.
3. Break-in Media. Leave the supply solenoid open
to saturate and break-in media for 20 minutes with
the blower off.
4. Close Solenoid. With the pressure set, press the
Function Key for one second to deactivate
Flow Test Mode and allow the supply solenoid to
close.